[ivanp]

what Error Codes have it now?

Helllo,

The ones which appears from time to time, more often lately 
4933 DDE: Air system, air to EGR mass flow, plausibility
497D Pressure sensor, plausibility while afterrunning: Exhau st pressure before turbocharger not plausible with amb ient pressure

Regeneration is done correctly, backpressure at idle is 6mbars something.
It is manifesting just when driving in the city when staying in lines - the DDE led is on on dashboard and the car cant accelerate as usualu. After a while (2-3 km), DDE led still on - but the cars accelerate just fine. The DDE led becomes off once i start to run at a higher speed - 40-50km/h for 2-3 mins.
It started to manifest more often once the weather became sunny.

I think I have executed that air mass system test in ista but i will try it again.

Thank you  for help!